Access Restriction Bypass Affecting krb5 package, versions <1.12.1+dfsg-20
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Test your applications- Snyk ID SNYK-DEBIAN10-KRB5-395839
- published 25 May 2015
- disclosed 25 May 2015
Introduced: 25 May 2015
CVE-2015-2694 Open this link in a new tabHow to fix?
Upgrade Debian:10 krb5 to version 1.12.1+dfsg-20 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream krb5 package and not the krb5 package as distributed by Debian.
See How to fix? for Debian:10 relevant fixed versions and status.
The kdcpreauth modules in MIT Kerberos 5 (aka krb5) 1.12.x and 1.13.x before 1.13.2 do not properly track whether a client's request has been validated, which allows remote attackers to bypass an intended preauthentication requirement by providing (1) zero bytes of data or (2) an arbitrary realm name, related to plugins/preauth/otp/main.c and plugins/preauth/pkinit/pkinit_srv.c.
References
- https://security-tracker.debian.org/tracker/CVE-2015-2694
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=8160
- https://github.com/krb5/krb5/commit/e3b5a5e5267818c97750b266df50b6a3d4649604
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.securityfocus.com/bid/74824
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2015-2694
- http://www.ubuntu.com/usn/USN-2810-1